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Merge remote-tracking branch 'origin/topic/vern/GH-3159.B'

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* origin/topic/vern/GH-3159.B:
  Fix for nested "when" statements leading to confusion over scoping
This commit is contained in:
Arne Welzel 2023-07-06 11:34:38 +02:00
commit f00dac544e
5 changed files with 30 additions and 15 deletions
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4
CHANGES
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@ -1,3 +1,7 @@
6.1.0-dev.177 | 2023-07-06 11:34:38 +0200
* Fix for nested "when" statements leading to confusion over scoping (Vern Paxson, Corelight)
6.1.0-dev.175 | 2023-07-06 09:27:03 +0200 6.1.0-dev.175 | 2023-07-06 09:27:03 +0200
* Define early_shutdown lambda earlier in zeek-setup, avoids build failure with gperftools (Tim Wojtulewicz) * Define early_shutdown lambda earlier in zeek-setup, avoids build failure with gperftools (Tim Wojtulewicz)

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VERSION
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@ -1 +1 @@
6.1.0-dev.175 6.1.0-dev.177

14
src/Var.cc
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@ -767,7 +767,6 @@ class OuterIDBindingFinder : public TraversalCallback
public: public:
OuterIDBindingFinder(ScopePtr s) { scopes.emplace_back(s); } OuterIDBindingFinder(ScopePtr s) { scopes.emplace_back(s); }
TraversalCode PreStmt(const Stmt*) override;
TraversalCode PreExpr(const Expr*) override; TraversalCode PreExpr(const Expr*) override;
TraversalCode PostExpr(const Expr*) override; TraversalCode PostExpr(const Expr*) override;
@ -775,19 +774,6 @@ public:
std::unordered_set<ID*> outer_id_references; std::unordered_set<ID*> outer_id_references;
}; };
TraversalCode OuterIDBindingFinder::PreStmt(const Stmt* stmt)
{
if ( stmt->Tag() != STMT_WHEN )
return TC_CONTINUE;
auto ws = static_cast<const WhenStmt*>(stmt);
for ( auto& cl : ws->Info()->WhenExprLocals() )
outer_id_references.insert(const_cast<ID*>(cl.get()));
return TC_ABORTSTMT;
}
TraversalCode OuterIDBindingFinder::PreExpr(const Expr* expr) TraversalCode OuterIDBindingFinder::PreExpr(const Expr* expr)
{ {
if ( expr->Tag() == EXPR_LAMBDA ) if ( expr->Tag() == EXPR_LAMBDA )

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testing/btest/Baseline/language.when-scope/out Normal file
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@ -0,0 +1,3 @@
### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
10.0.0.1
10.0.0.2

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testing/btest/language/when-scope.zeek Normal file
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# @TEST-DOC: Check for regression of "when" capture confusion over outer scope
#
# @TEST-EXEC: zeek -b %INPUT | sort >out
# @TEST-EXEC: btest-diff out
module Test;
event zeek_init()
{
local myset = set(10.0.0.1, 10.0.0.2);
when [myset] (T)
{
for ( ip in myset )
{
when [ip] ( ip == ip )
{
print fmt("%s", ip);
}
}
}
}